Missing onerror callback for Titanium HTTPClient

[samih-harfouche]

when using jsOAuth-1.3.6.js with Titanium the "xhr" that is declared via Request();
xhr = Request(); should declare xhr.onerror function because titanium HTTPClient doesn't send readystate = 4 in case an error (like 401 error) accrued. therefore, the failure callback method never fires on HTTPClient error

xhr.onerror = function(e) {
var responseObject = {
error : e.error,
source : xhr,
status : this.status,
statusText : this.statusText
}
failure(responseObject);
};